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Finding the Fourth Proportional to 7,880.40, 10,875.08 and 4,343.56

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Solution

The fourth proportional to 7,880.40, 10,875.08 and 4,343.56 is: 5,994.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,880.40 : 10,875.08 = 4,343.56 : x
  2. Step 2: Convert to fraction form
    7,880.40/10,875.08 = 4,343.56/x
  3. Step 3: Cross multiply
    7,880.40x = 10,875.08 × 4,343.56
  4. Step 4: Simplify right side
    7,880.40x = 47,236,562.48
  5. Step 5: Solve for x
    x = 47,236,562.48/7,880.40
  6. Step 6: Final answer
    x = 5,994.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.